肿瘤标记物联合检测对高龄大肠癌患者的诊断价值

目的 探讨血清肿瘤标记物对80岁以上大肠癌患者的诊断价值.方法 采用ELISA法检测68例高龄大肠癌患者和35例高龄大肠良性疾病患者血清糖类抗原CA199、CA242及癌胚抗原(CEA),分析3种肿瘤标记物对大肠癌诊断的灵敏性.结果 大肠癌患者血清糖类抗原CA199、CA242及CEA检测结果分别为(37.97±15.95) U/ml、(50.08±24.20) U/ml和(22.34±17.35) μg/L,均高于大肠良性疾病患者CA199( 10.73±6.27) U/ml,CA242(8.00±3.25) U/ml,CEA (2.32±1.01) μg/L],并随病程进展逐渐增高；3种肿瘤标记物诊断的灵敏性与大肠癌的分期有关；平行联合检测可使诊断的灵敏性提高至83.6％,系列联合检测可使特异性提高至88.7％.结论CA199、CA242及CEA对高龄大肠癌患者的诊断有一定的价值.

Value of combined determination of tumor markers in the diagnosis of senile patients with colorectal cancer

Objective To evaluate the value of serum tumor markers in diagnosis of over 80 years old patients with colorectal cancer.Methods Serum CA199,CA242 and CEA of 68 cases senile patients with colorectal cancer and 35 cases senile patients with benign large intestinal diseases were detected by ELISA.Results Serum levels of CA199,CA242 and CEA in patients with colorectal cancer were (37.95 ± 15.95 ) U/ml,( 50.08 ± 24.20 ) U/ml,( 22.34 ± 17.35 ) μg/L respectively and were significantly higher than that in patients with benign large intestinal diseases CA199 ( 10.73 ± 6.27 ) U/ml,CA242 ( 8.00 ± 3.52 ) U/ml,CEA(2.32 ± 1.01 )μg/L.In addition,the level of these three markers was increased with the progress of colorectal cancer and the sensitivity of diagnosis was related with the stages of colorectal cancer.Parallel combined testing methods increased the diagnostic sensitivity to 83.6％,and serial combined testing increased the diagnostic specificity to 88.7 ％.Conclusions Serum tumor markers showed certain values in the diagnosis of the senile patients with colorectal carcinoma.Furthermore,the combined determination of tumor markers is helpful for early diagnosis of colorectal cancer and increases the sensitivity and specificity in diagnosing of colorectal carcinoma.